Improvement in adjusters for well-drills



Patented Dec. 17,1872.

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GALLAGHER.

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JOSEPH ALLAGHER, OF SHAMBURG, PENNSYLVANIA.

IMPROVEMENT lNlADJUSTERS` FOR WELL-DRILLS.

Specification forming part of Letters Patent No. 133,977, dated December 17, 1872.

To all whom it may concern:

ing as hereinafter described.

In the accompanying drawing, Figure l is a side view of the device, and Fig. 2 is a front view.

Similar letters of reference indicate corresponding parts.

A A represent the wrists, which rest in a shallow groove on top of the walking-beam.

' B is the block or bar to which the wrists are attached. O is the clamp, which is hinged to the bar as seen at D. E represents the rod. The edge of the bar B is grooved so as to receive about one-half of the diameter'ot' the rod. One end of the clamp is tted to the rod and is drawn up onto and so as to clamp the rod in the` groove by the screw F. When the screw is loosened the clamp may be moved end wise and turned on its hinge or be removed from the rod, which allows the latter to be removed from the bar. The rod may be bent up over the end of the bar, as seen in Fig. 1,

so .as to withstand a down pull.

In attaching the device to the working. beam the part of the bar between. the clamp and the wrists is inserted in a slot in the end of the beam. The whole device will then hang vertically with the wrists resting in a shallow groove on the top of the beam. It is then made fast to the beam by a slotted timber bolted fast over the wrists. When thus connected the adjuster is ready for use either for pumping, or drilling, the hook being used in the former case, and a straight rod inthe latter, which may be drawn into the groove in the bar sufficiently tight to be held by the friction alone. This device may, therefore, be used for either pumping` or drilling without removing it from the walking-beam.

In this respect, as well asin other respects, my device has advantages over the adjusters now in use, advantages which will be readily understood and appreciated by all who are conversant with this particular branch of busmess.

Having thus described myinvention, I claim as new and desire to secure by Let-ters Patent-` An adjuster for connecting pumping and drilling rods to a workingbeam composed of the grooved bar B, clamp C, either hinged or not, and wrists A A, arranged substantially as described.

JOSEPH GALLAGHER.

lVitnesses:

M. A. EAsLEY, A. C. DoUeLAss. 

